thanks! I think that there must be a reason why noroclav was chosen (it's synulox: penicillin) rather than Baytril as the latter is really designed for urinary & respiratory infections, which is what Swampy first got a.bs for, then I realised that they seemed to help in some weird way too with his vestibular symptoms, at least for a while. The vet uses Baytril a lot though and says that the blindness thing is relevant if owners give too much by mistake (Swampy is of course already profoundly blind) - but he cut a bit off the corners of each tablet so that Swampy would not have the full dose of a 5kg cat as doesn't weigh that much. It's apparently in the same class of antibiotics that Gill's Franta had with a lot of success though & worked on the infection in his brain to stop his fits and circling. I still think I will try the noroclav again from tomorrow morning and only if it doesn't work this time at all, consider the Baytril (I will raise the CRF point with the vet too).
Swampy's had a really good week, so it's so disappointing, if predictable. Hopefully with the Istin and Selgian keeping him calm, the noroclav will still help. Things turn quickly: yesterday evening he and Max had a proper play fight in the bed, with Swampy actively batting Max with his paw and biting his head! I wish I'd had the camera to video it. Then this morning he was more vestibular and a bit less switched on. I suppose it's like that with brains.